Add "binary annotations" at the end of CodeView S_INLINESITE symbols,
which are a series of compressed integers that represent how line
numbers map to addresses.

This requires assembler support; you will need commit b3aa594d ("gas:
add .cv_ucomp and .cv_scomp pseudo-directives") in binutils.

gcc/
	* configure.ac (HAVE_GAS_CV_UCOMP): New check.
	* configure: Regenerate.
	* config.in: Regenerate.
	* dwarf2codeview.cc (enum binary_annotation_opcode): Define.
	(struct codeview_function): Add htab_next and inline_loc;
	(struct cv_func_hasher): Define.
	(cv_func_htab): New global variable.
	(new_codeview_function): Add new codeview_function to hash table.
	(codeview_begin_block): Record location of inline block.
	(codeview_end_block): Add dummy source line at end of inline block.
	(find_line_function): New function.
	(write_binary_annotations): New function.
	(write_s_inlinesite): Call write_binary_annotations.
	(codeview_debug_finish): Delete cv_func_htab.